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The output of the flip-flop _______ when both the input, preset and clear are active low at the same time.

The output of the flip-flop _______ when both the input, preset and clear are active low at the same time. Correct Answer Becomes X (Don’t care)

If preset is active low then Q=1, Q’=0. If clear is active low Q=0, Q’=1. It is not possible to preset and clear a flip-flop at the same time because Q can’t be 0 and 1 at the same instant of time, hence the output of the flip-flop will become X, which is don’t care.

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